Lamp socket and grip



LAMP SOCKET AND GRIP Filed April 9. 1928 Will. .llmi #5 A 5! :37 4 I q I k z A 9 VJ A5 INVENTOR BY W ATTORNEY/5 Patent ed Dec. 3, 1929 UNITED STATES PATENT OFFICE WILLIAM A. WULLE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE PYLE-NATIONAL COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY LAMP SOCKET AND GRIP Application filed April 9,

My invention relates to improvements in electric light sockets and has for one object to provide a new and improved form of socket which will hold an inflated electric lamp base in place without danger of vibrating or j arring loose. Other objects will appear from time to time throughout the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein Figure 1 is a side elevation;

Figure 2 is an elevation viewed from right angles to Figure 1;

Figure 3 is a section along the line 33 of Figure 5;

Figure 4 is a section along the line 14E of Figure 5;

Figure 5 is a plan view;

Figure 6 is a perspective view of the bot tom section;

Figure 7 is a perspective of the holding spring.

Like parts are indicated by like characters throughout the specification and drawings.

A is a base; A a socket piece attached to the base. The base A is recessed as at A The socket piece is apertured clear through and held in place 011 the base by the screws it. which passes through the socket and the base. Contained within the insulating socket A is the threaded conductor socket A the screws A passing through it and being threaded into the base.

On the bottom oi the socket piece is a spring contact button B connected to the terminal B". The threaded conductor socket A is of course out oi": electric contact with the members B B This socket A is threaded to engage the usual type of threaded lamp base. It diifers from the ordinary type of threaded socket in that it has diametrically opposed slots B B in which are spring fingers B B, which fingers are recurved as indicated and are in electric contact with the socket and project inwardly beyond the threads so as to come into yielding engagement wlth the threaded base of the lamp. B is an anchored ring through which the screws A pass and from which project upwardly the sprlngs B 1928. Serial No. 268,469.

whereby the parts are held in working relation.

When a lamp is screwed into the socket the base as it penetrates pushes the spring fingers aside so that the base can be screwed home in the usual manner with the spring fingers gripping the base on opposite sides. The yielding flexible gripping of these two fingers holds the lamp against vibration and movement and prevents it from vibrating or rattling loose. The fact that the two spring fingers are integral with the anchored ring insures that the holding of the lamp will be done by the springs only without any added load on any other part of the lamp and makes it possible to substitute this device for the standard device by merely introducing a slotted, threaded socket and the spring fingers.

I claim:

1. A socket for screw base electric lamps and the like, comprising an insulating base, an insulating socket-piece mounted thereon, a conducting socket contained within the insulating socket-piece and interiorly threaded to engage a lamp base, a contact member arranged adjacent the bottom of the insulating socket, the inner periphery of the threaded conducting socket being longitudinally slotted, a conductor ring surrounding the contact member in the bottom of the socket and out of electric contact with it, a spring finger projecting upwardly from such ring lying within the slot and having a recurve end adapted to engage the bottom of the slot, the central portion of the spring finger projecting inwardly inside the threaded portion of the socket.

2. A socket for screw base electric lamps and the like, comprising an insulating base, an insulating socket-piece mounted thereon, a conducting socket contained within the insulating socket-piece and interiorly threaded to engage a lamp base, a contact member arranged adjacent the bottom of the insulating socket, the inner periphery of the threaded conducting socket being longitudinally slotted, a conductor ring surrounding the contact member in the bottom of the socket and out of electric contact with it, a spring finger projecting upwardly from such ring lying Within the slot and having a recurve end adapted to engage the bottom of the slot, the central portion of the spring finger project- 5 ing inwardly inside the threaded portion of the socket,. there being a plurality of said slots and a" springfinger projecting upwardly from the ring and lying in each such slot. 7 SignedQat Chicago, county of Cook and 10 Stare 6f 'I11inoi's;this fifth day of April, 1928.

WILLIAM A. WVULLE. 

